1881374839 has 2 divisors, whose sum is σ = 1881374840. Its totient is φ = 1881374838.

The previous prime is 1881374801. The next prime is 1881374843. The reversal of 1881374839 is 9384731881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1881374839 - 2⁷ = 1881374711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1881384839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 940687419 + 940687420.

It is an arithmetic number, because the mean of its divisors is an integer number (940687420).

Almost surely, 2^1881374839 is an apocalyptic number.

1881374839 is a deficient number, since it is larger than the sum of its proper divisors (1).

1881374839 is an equidigital number, since it uses as much as digits as its factorization.

1881374839 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 52.

The square root of 1881374839 is about 43374.8180284367. The cubic root of 1881374839 is about 1234.5019412550.

The spelling of 1881374839 in words is "one billion, eight hundred eighty-one million, three hundred seventy-four thousand, eight hundred thirty-nine".